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Unformatted text preview: 1 E 1 A U )
Noting the multipliers used above, we have
1 0 0 100 1 00 1 11 0 1
1
2 0 010 310 3 12 1 201 0 2 1 0 01 1 1
1 1 0 2 0 0 1
5
2 U 2 3. (8 pts) If A is a 4 4 matirx, a) What matrix E, upon the multiplication EA, has the effect on A of subtracting 3 times
row 2 of A from row 4 of A?
1 00 0 1 00 0 0 10 0 E 0 301 . b) What is the effect on A if we perform the operation AE using the same matrix E from
part a)
AE has the effect on A of subtracting 3 times column 4 of A from column 2 of A c) Without doing any calculations, what is E 1 ? 1000
E 1 0100
0010 since adding back in 3*row2 takes us back to the identity. 0301 3 4. (12 pts) Using GaussJordan elimination, in the...
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This document was uploaded on 02/19/2014 for the course MATH 441 at WVU.
 Spring '08
 STAFF
 Math, Linear Algebra, Algebra

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